If a voltage reading is required from an analog source, what action must be taken?

When working with an analog source and a voltage reading is required, converting the signal to digital form is essential for accurate measurements and processing. This process is accomplished using an Analog-to-Digital Converter (ADC), which transforms the continuous analog voltage level into a discrete digital representation. This digital form can then be easily interpreted by digital devices, measurement tools, or control systems, facilitating data analysis and integration with digital systems.

Analog signals can be susceptible to noise and interference, which can affect the accuracy of readings if not properly managed. By converting the signal to a digital format, you can leverage the benefits of digital signal processing, including noise filtering and more stable reading acquisition.

In contrast, the other options, while potentially relevant in specific contexts, do not directly address the need for voltage measurement from an analog source. For instance, a current transformer is typically used for transforming current levels rather than voltage, and increasing voltage output does not necessarily lead to accurate readings. Installing a bypass circuit may also be irrelevant, as it doesn't directly pertain to measuring voltage from the analog source but could be used for other purposes in electrical systems.